EP0203494B1 - Huile lubrifiante utilisée dans une atmosphère "flon" - Google Patents

Huile lubrifiante utilisée dans une atmosphère "flon" Download PDF

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Publication number
EP0203494B1
EP0203494B1 EP86106815A EP86106815A EP0203494B1 EP 0203494 B1 EP0203494 B1 EP 0203494B1 EP 86106815 A EP86106815 A EP 86106815A EP 86106815 A EP86106815 A EP 86106815A EP 0203494 B1 EP0203494 B1 EP 0203494B1
Authority
EP
European Patent Office
Prior art keywords
oil
modified silicone
fatty acid
lubricating oil
oils
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86106815A
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German (de)
English (en)
Other versions
EP0203494A2 (fr
EP0203494A3 (en
Inventor
Takashi Kaimai
Sampo Kusayanagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Nippon Mining Co Ltd
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Filing date
Publication date
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Publication of EP0203494A2 publication Critical patent/EP0203494A2/fr
Publication of EP0203494A3 publication Critical patent/EP0203494A3/en
Application granted granted Critical
Publication of EP0203494B1 publication Critical patent/EP0203494B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/008—Lubricant compositions compatible with refrigerants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M155/00—Lubricating compositions characterised by the additive being a macromolecular compound containing atoms of elements not provided for in groups C10M143/00 - C10M153/00
    • C10M155/02—Monomer containing silicon
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/045—Siloxanes with specific structure containing silicon-to-hydroxyl bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/046—Siloxanes with specific structure containing silicon-oxygen-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/047—Siloxanes with specific structure containing alkylene oxide groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/048—Siloxanes with specific structure containing carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/32—Wires, ropes or cables lubricants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/34—Lubricating-sealants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/36—Release agents or mold release agents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/38—Conveyors or chain belts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/40—Generators or electric motors in oil or gas winning field
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/42—Flashing oils or marking oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/44—Super vacuum or supercritical use
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/50—Medical uses

Definitions

  • This invention relates to a lubricating oil suitable for use in refrigerators, and particularly for use in rotary compressors.
  • the rotary compressors have a high contact pressure and a high sliding speed in the sliding portion and also meet with a high discharge temperature. Therefore, lubricating oils to be applied are required to have excellent fluorohydrocarbon stability, high wear resistance and assured extreme pressure resistance.
  • DE-A-1 806 445 discloses a modified long-chain diorgano polysiloxane as an additive to mineral oils which provides a mixture having a small change of viscosity within high temperature intervals.
  • the specific higher fatty acid modified silicone oils as used in the present invention are not disclosed in said document.
  • the invention comprises a lubricating oil for refrigerators which is used in a fluorohydrocarbon atmosphere, comprising a base oil having incorporated therein from 20 to 10,000 wt ppm of a silicone oil represented by the formula: wherein X represents a group of-(CH2)n-COOH; n represents an integer of from 11 to 17; and the sum of x and y is from 10 to 1,000 with an x/y ratio of from 100/1 to 1/1000.
  • the base oil which can be used in this invention is not particularly limited, and includes generally employed mineral oils or synthetic oils having a viscosity of from about 5 to about 500 mm 2 /sec at 40°C and mixtures thereof.
  • the mineral oils to be used include raffinates of fractions having the above-described viscosity range obtained from naphthene or paraffin crude oils. The viscosity may appropriately be selected depending on purposes. Since it is particularly important to use a base oil having a low pour point, the base oil is preferably refined by low-temperature dewaxing or hydrogenation dewaxing.
  • the synthetic oils to be used include heavy alkylates, i.e., long-chain alkylbenzenes, poly-a-olefins and polybutene.
  • the higher fatty acid-modified silicone oil which can be used in the present invention is a dimethyl polysiloxane whose methyl groups are partially substituted with a saturated higher fatty acid having from 12 to 18 carbon atoms, such as lauric acid, myristic acid, palmitic acid or stearic acid, and are represented by the formula: wherein X represents a group of 4CH,4-,COOH; n represents an integer of from 11 to 17; and the sum of x and y is from 10 to 1,000 with an x/y ratio of from 100/1 to 1/100.
  • higher fatty acid-modified silicone oil represented by the above formula examples include KF 910, X-22-800 (trade names both produced by Shin-etsu Chemical Industry Co., Ltd.) and analogues thereof.
  • fatty acid-modified silicone oils those wherein the modifying fatty acid is an unsaturated fatty acid have reduced fluorohydrocarbon stability, and those wherein the modifying substituent is a lower fatty acid having not more than 10 carbon atoms do not bring about any effect to improve wear resistance.
  • the above-described higher fatty acid-modified silicone oil is added to the base oil in an amount of from 20 to 10,000 wt ppm, and preferably from 70 to 3,000 wt ppm. If the amount is less than 20 wt ppm, sufficient wear resistance cannot be exerted.
  • the higher fatty acid-modified silicone oil of the present invention is not so highly soluble in the base oil at low temperatures, and the upper limit of solubility is about 10,000 wt ppm, though varying depending on the properties of the base oil. As the amount of the higher fatty acid-modified silicone oil in the lubricating oil composition increases, the wear resistance of the composition increases.
  • modified silicone oils other than the higher fatty acid-modified silicone oils according to the present invention such as epoxy-modified silicone oil, carboxy-modified silicone oil or mercapto-modified silicone oil, or with general silicone oils.
  • the lubricating oil composition containing the higher fatty acid-modified silicone oil of this invention when in use under a fluorohydrocarbon atmosphere, exhibits excellent wear resistance and extreme pressure resistance without impairing fluorohydrocarbon stability. Moreover, it is effective to improve hue stability and to prevent rust on iron or copper.
  • the lubricating oil composition of the invention may further contain other additives commonly employed, such as defoaming agents, e.g., dimethyl polysiloxanes, antioxidants, e.g., dibutyl-p-cresol, and hydrochloric acid-scavengers.
  • defoaming agents e.g., dimethyl polysiloxanes
  • antioxidants e.g., dibutyl-p-cresol
  • hydrochloric acid-scavengers e.g., hydrochloric acid-scavengers.
  • Lubricating oils were prepared by mixing a paraffin mineral oil having a viscosity of 32 mm 2 /sec (40°C), a naphthene mineral oil having a viscosity of 30 mm 2 /sec (40°C) and a mixed oil of an alkylbenzene (Zeflon 150) and a paraffin mineral oil having a viscosity of 32 mm 2 /sec as a mixture with a higher fatty acid-modified silicone oil (KF 910, produced by Shin-etsu Chemical Industry Co., Ltd.) as shown in Table 1.
  • a rotating shaft was held by two V blocks and rotated at 290 rpm by means of a Falex testing machine specified by ASTM-D-2670.
  • Load resistance was evaluated by determining a load at which seizing of a test piece occurred.
  • Wear resistance was evaluated by measuring an amount of wear of the test piece after running for 1 hour under a load fixed at 136.08 kg (300 Ib). The testing was carried out in an atmosphere of Flon R-12.
  • Fluorohydrocarbon stability was evaluated by charging iron, copper, aluminum wire (catalyst), a test oil and Flon R-12 in a sealed glass tube and, after preserving for a given period of time, measuring the hue of the oil and the amount of hydrochloric acid generated.
  • the lubricating oil containing the higher fatty acid-modified silicone oil of the present invention has excellent load resistance.
  • Table 2 reveals the remarkable improvement in wear resistance brought about by the lubricating oil of the present invention.
  • the silicone oil of the present invention does not adversely affect fluorohydrocarbon stability at all, while the lubricating oil containing tricresyl phosphate adversely influences fluorohydrocarbon stability.
  • Example 4 To the same paraffin mineral oil as used in Example was added 300 ppm of dimethyl polysiloxane, epoxy-modified silicone oil (KF 102, produced by Shin-etsu Chemical Industry Co., Ltd.) or carboxy-modified silicone oil (X-22-3710, produced by Shin-etsu Chemical Industry Co., Ltd.). Each of the resulting oil compositions was subjected to performance test using a Falex testing machine in the same manner as described in Example to determine anti-seizing property and wear of a test piece. The results obtained are shown in Table 4 below.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Claims (2)

1. Une huile lubrifiante pour réfrigérateurs qui est utilisée en atmosphère d'hydrocarbure fluoré, comprenant une huile de base contenant de 20 à 10 000 ppm en poids d'une huile de silicone représentée par la formule:
Figure imgb0009
dans laquelle X représente un groupe de formule ―(CH2)n―COOH; n représente un entier de 11 à 17; et la somme de x et de y est de 10 à 1 000 avec un rapport x/y de 100/1 à 1/1 000.
2. Une composition d'huile lubrifiante selon la revendication 1, dans laquelle ladite huile de silicone modifiée par un acide gras supérieur est présente en quantité de 70 à 3 000 ppm en poids.
EP86106815A 1985-05-20 1986-05-20 Huile lubrifiante utilisée dans une atmosphère "flon" Expired - Lifetime EP0203494B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60105956A JPS61266494A (ja) 1985-05-20 1985-05-20 フロン雰囲気下で用いる潤滑油
JP105956/85 1985-05-20

Publications (3)

Publication Number Publication Date
EP0203494A2 EP0203494A2 (fr) 1986-12-03
EP0203494A3 EP0203494A3 (en) 1987-10-21
EP0203494B1 true EP0203494B1 (fr) 1990-12-12

Family

ID=14421269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106815A Expired - Lifetime EP0203494B1 (fr) 1985-05-20 1986-05-20 Huile lubrifiante utilisée dans une atmosphère "flon"

Country Status (4)

Country Link
US (1) US4707280A (fr)
EP (1) EP0203494B1 (fr)
JP (1) JPS61266494A (fr)
DE (1) DE3676113D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2585339B2 (ja) * 1988-01-29 1997-02-26 出光興産株式会社 フロン雰囲気用潤滑油組成物
US5185089A (en) * 1990-05-10 1993-02-09 Allied-Signal Inc. Lubricants useful with 1,1-dichloro-2,2,2-trifluoroethane
AU655345B2 (en) * 1992-02-18 1994-12-15 Idemitsu Kosan Co. Ltd Lubricant for refrigerating machine employing refrigerant comprising tetrafluoroethane
US5527479A (en) * 1993-09-20 1996-06-18 Hitachi Maxell, Ltd. Lubricating composition and recording medium using the same
JP5774981B2 (ja) 2008-04-04 2015-09-09 ダウ グローバル テクノロジーズ エルエルシー 冷媒組成物
JP5538044B2 (ja) * 2010-04-16 2014-07-02 Ｊｘ日鉱日石エネルギー株式会社 耐摩耗性に優れる潤滑油組成物

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS35795B1 (fr) * 1955-08-22 1960-02-09
US3058912A (en) * 1957-12-17 1962-10-16 Ethyl Corp Lubricant compositions
US3047499A (en) * 1960-08-15 1962-07-31 Gen Electric Grease compositions
US3177178A (en) * 1962-12-24 1965-04-06 Gen Electric Process for making organopolysiloxanes
GB1012324A (en) * 1963-03-05 1965-12-08 British Petroleum Co Siloxane ester lubricants
US3560542A (en) * 1966-12-02 1971-02-02 Dow Corning Functional perfluoroalkylene organosilicon compounds
GB1224885A (en) * 1967-11-03 1971-03-10 Ici Ltd Lubricant compositions
US4199461A (en) * 1977-02-14 1980-04-22 Chevron Research Company Refrigeration oil containing wear-inhibiting amounts of an aryl phosphate-fatty acid combination
US4356098A (en) * 1979-11-08 1982-10-26 Ferrofluidics Corporation Stable ferrofluid compositions and method of making same

Also Published As

Publication number Publication date
EP0203494A2 (fr) 1986-12-03
JPS61266494A (ja) 1986-11-26
DE3676113D1 (de) 1991-01-24
US4707280A (en) 1987-11-17
EP0203494A3 (en) 1987-10-21

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